// Copyright (C) 2010, Scott W. Dunlop <swdunlop@gmail.com>
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//    * Redistributions of source code must retain the above copyright
//      notice, this list of conditions and the following disclaimer.
//    * Redistributions in binary form must reproduce the above copyright
//      notice, this list of conditions and the following disclaimer in the
//      documentation and/or other materials provided with the distribution.
//    * Neither the name of the <organization> nor the
//      names of its contributors may be used to endorse or promote products
//      derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
// ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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#ifndef NOSPEX_PHYSICS_H
#define NOSPEX_PHYSICS_H 1

#ifndef NOSPEX_DATA_H
#error Do not include NoSpex header files directly, instead use nospex/nospex.h
#endif

/** Request graph physics updates. */
void nx_request_graph_physics( nx_graph_p graph );

/** Request graph blips updates. */
void nx_request_graph_blips( nx_graph_p graph );

/** Pauses the graph's physics models. */
void nx_pause_graph( nx_graph_p graph );

/** Resumes the graph's physics models. */
void nx_resume_graph( nx_graph_p graph );

/** Calculates the position of a blip based on a time. */
void nx_calc_blip_position( nx_blip_p blip, nx_time now, double* x, double* y );

/** Forces all nodes in the graph to not overlap the edge. */
double nx_enforce_graph_margins( nx_graph_p graph, int bounce );

#endif //ifndef NOSPEX_PHYSICS_H

